Clock Buffers

Clock buffers are semiconductor devices that fan out clock signals and isolates the source from the load. Clock buffers are known to have multiple controllable outputs as well as separate power supplies for outputs or for input/output allowing it to work as a level shifter.

What are clock buffers?

Clock buffers are devices clock buffers create multiple copies of input clocks for individual distribution across a PCB. They are comprised of single-ended output buffers and differential outputs. Single-ended output clock buffers are LVCMOS (Low voltage complementary metal-oxide-semiconductor) while differential output buffers may be LVPECL (Low Voltage Positive Emitter Coupled Logic), HSTL (High-speed transceiver logic) or LVDS (Low Voltage Differential Signaling).

Clock buffers don't alter the frequency properties of the input signal, which in turn minimalises the additive noise which is added to the input whilst in the buffering stage.

Types of clock buffers

Clock buffers are offered in an array of variations such as variations on the maximum operating input frequency that can range from 30 Mhz to 8 Ghz, variety on the maximum supply current it can support and the number of pins installed in the IC.

Some clock buffers feature ultra-low jitter and low skew clock distribution.

Applications of clock buffers

Clock buffers are widely used in applications such as;

  • High-speed instrumentation and line receivers
  • Converter clocking
  • Automated test equipment (ATE)
  • Wireless and wired communications
  • Medical and industrial imaging

...
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Description Price Number of Elements per Chip Maximum Supply Current Maximum Input Frequency Mounting Type Package Type Pin Count Dimensions Length Width Height Maximum Operating Supply Voltage Maximum Operating Temperature Maximum Output Frequency Minimum Operating Supply Voltage
RS Stock No. 787-6924
Mfr. Part No.NB3N551DG
HK$15.51
Each (In a Pack of 2)
units
4 40 mA 180MHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C 180MHz 3 V
RS Stock No. 787-6936
Mfr. Part No.NB3N551MNR4G
HK$16.894
Each (In a Pack of 5)
units
4 40 mA 180MHz Surface Mount DFN 8 2 x 2 x 0.95mm 2mm 2mm 0.95mm 5.5 V +85 °C 180MHz 3 V
RS Stock No. 121-6383
Mfr. Part No.MC100EL11DG
HK$41.601
Each (In a Tube of 98)
units
4 31 mA 1.5GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm +5.7 V +85 °C - -4.2 V
RS Stock No. 787-6927
Mfr. Part No.NB3N2304NZDTG
HK$16.83
Each (In a Pack of 2)
units
4 25 mA 140MHz Surface Mount TSSOP 8 3.1 x 4.5 x 0.95mm 3.1mm 4.5mm 0.95mm 3.6 V +85 °C 140MHz 3 V
RS Stock No. 121-6394
Mfr. Part No.NB3N2304NZDTG
HK$12.164
Each (In a Tube of 100)
units
4 25 mA 140MHz Surface Mount TSSOP 8 3.1 x 4.5 x 0.95mm 3.1mm 4.5mm 0.95mm 3.6 V +85 °C 140MHz 3 V
RS Stock No. 787-6933
Mfr. Part No.NB3N551DR2G
HK$14.276
Each (In a Pack of 5)
units
- - - Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C - 3 V
RS Stock No. 170-3519
Mfr. Part No.NB3N551DG
HK$14.291
Each (In a Tube of 98)
units
4 40 mA 180MHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C 180MHz 3 V
RS Stock No. 121-9854
Mfr. Part No.NB3N551DR2G
HK$6.777
Each (On a Reel of 2500)
units
- - - Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C - 3 V
RS Stock No. 124-5340
Mfr. Part No.NB3N551MNR4G
HK$7.663
Each (On a Reel of 1000)
units
4 40 mA 180MHz Surface Mount DFN 8 2 x 2 x 0.95mm 2mm 2mm 0.95mm 5.5 V +85 °C 180MHz 3 V
RS Stock No. 787-6716
Mfr. Part No.MC100EL11DG
HK$48.97
Each
units
4 31 mA 1.5GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm +5.7 V +85 °C - -4.2 V
RS Stock No. 787-6914
Mfr. Part No.NB3L553DG
HK$20.035
Each (In a Pack of 2)
units
4 30 mA 200MHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.25 V +85 °C 200MHz 2.375 V
RS Stock No. 163-0041
Mfr. Part No.NB3U1548CDG
HK$42.57
Each (In a Tube of 96)
units
1 5 μA 2GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 50mm 4mm 1.5mm 3.3 V +85 °C 160MHz 1.5 V
RS Stock No. 787-6778
Mfr. Part No.MC100LVEL11DG
HK$48.97
Each
units
4 30 mA 1GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm +3.8 V +85 °C - ±3 V
RS Stock No. 787-6918
Mfr. Part No.NB3L553MNR4G
HK$23.365
Each (On a Tape of 2)
units
4 30 mA 200MHz Surface Mount DFN 8 2 x 2 x 0.95mm 2mm 2mm 0.95mm 5.25 V +85 °C 200MHz 2.375 V
RS Stock No. 802-1982
Mfr. Part No.NB2304AI2DG
HK$10.135
Each (In a Pack of 10)
units
- 45 mA 133MHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 3.6 V +85 °C 133.3MHz 3 V
RS Stock No. 802-2064
Mfr. Part No.NB7L1008MMNG
HK$100.00
Each
units
8 315 mA 8GHz Surface Mount QFN 32 5 x 5 x 0.95mm 5mm 5mm 0.95mm 3.6 V +85 °C - 2.375 V
RS Stock No. 787-6970
Mfr. Part No.NB7VQ14MMNG
HK$92.99
Each
units
8 210 mA 8GHz Surface Mount QFN 16 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.6 V +85 °C - 1.71 V
RS Stock No. 124-5344
Mfr. Part No.NB6N14SMNG
HK$62.665
Each (In a Tube of 123)
units
4 100 mA 2GHz Surface Mount QFN 16 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.8 V +85 °C - -
RS Stock No. 787-6841
Mfr. Part No.MC10EP11DG
HK$62.84
Each
units
4 -40 mA 3GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm +5.5 V +85 °C - -3 V
RS Stock No. 145-4073
Mfr. Part No.NB2305AI1DR2G
HK$4.563
Each (On a Reel of 2500)
units
1 50 mA 133MHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 3.6 V +85 °C 133.3MHz 3 V